Absorption refrigerating apparatus



`.lume 2, i942. E. E. ALLYNE ABSORPTION REFRIGERATNG APPARATUS 3 Sheets-Sheet Al original Filed Jan. :5,4 19:58

Ildfllllll l June 2, 1942. E. E. ALLYNE 2,284,791

BSORPTION REFRIGERATING APPARATUS Original Filed Jn. 3, 1938 3 Sheets-Sheet 2 June 2, i942. E. E, ALLYNE A 2,284,791

ABSORPTION REFRIGERATING APPARATUS Original Filed Jan. 3, 1938 3 Sheets-Sheet 3 INVENTOFI 5 /ML Y/ve Patented June 2, 1942 ABSGRPTION REFRIGRATING APPARATUS v Edmund E. Allyne, Cleveland, Ohio, assigner to Allyne Laboratories, Inc., Cleveland, Ohio Original application January 3,-1938,"Serial No.

183,842. Divide-d and this application er 21, 1939, Serial No. 295,972 v 4. Claims.

This is a divisional application of my copending application, Serial No. 183,942, filed January 3, 1938, now Patent 2,177,796, dated October 31, 1939, entitled Absorption refrigerator mechanism.

This particular invention pertains to the arrangement of the refrigeration apparatus in relationship to the food compartment of the refrigerator. e

More particularly, the present invention is concerned with theplacement of the generatorabsorber and its associated heating means in the lower front portion of the refrigerator cabinet and the means for properly insulating the apparatus so that no heat will affect the contents oi the food compartment.

Another object is to construct the rear portion of the refrigerator cabinet in such a manner as to include heat flues for the dissipation of the heat given ofi from the generator heater, together with the utilization of the ascending heat to create a draft through the ilue and thus draw vcool air from adjacent the bottom of the cabinet across the condenser, condenser-receiver and generator circulation tubes used in the system.

Referring to the drawings, e

Fig. 1 is a front elevation of the refrigerator cabinet showing in dotted lines the arrangement of the refrigeration apparatus with a portion of the cabinet broken away;

Fig. 2 is a vertical cross-sectional View taken on line 2--2 of Fig. 1;-V

(or. ca -11e) Fig. 3 is a horizontal cross-section taken on line 3--3 of Fig. 2;

Fig. 4 is a partial horizontal cross-section taken on line 4-4 of Fig. 4;

Fig. 5 is a rear plan View of the generatorabsorber circulatory cooling coils, condenser and condenser-receiver;

Fig.` 6 is a side elevation of the generator-absorber, together with its cooling vcoils and asso-1 ciated condenser and condenser-receiver;

Fig. 7 is a rear elevation of a modified arrangement of the generator-absorber circulatory cooling coils, condenser e and condenser-receiver, wherein the condenser-receiver is positioned below the condenser coils; and Y Fig. 8 is a side elevation of the apparatus shown in Fig. 7 illustrating the condenser-receiver below the condenser coils.

Specificallyin the drawings, numeral I denotes a metal refrigerator cabinet mounted on a base lplatform 2 having front, side and rear floor openings 3. A heat insulated food compartment 4 is positioned in the upper front portion of the 'cabinet andis provided with a door 5 for gaining access thereto.

` The rear wall I9 of the cabinet is spaced from the backcof the` heat insulated food compartment 4 to form a space for enclosing portions of the refrigerating apparatus and to act as a heat flue, as will be explained later.

Directly beneath the food compartment I and suitably attached to the base 2 is a generatorabsorber II having an associated heating burner I2, thermostatic fuel control I3 and fuel tank I4. This apparatus is preferably mounted in the lower front portion of the cabinet and concealed from View by a door or panel I5 which permits ready access to these parts for refueling,

adjustment and repair. Behind the generatorabsorber and burner assembly there is mounted the air cooled generator circulatory tubes IB through which hot uid from the generator-absorber is circulated during the evaporating portion of the refrigeratingcycle to remove the latent heat therefrom. Situated below the level of the generator-absorber and the cooling coil I6 is a double bank of nned air cooling condenser coils I1.

It will be understood that these cooling and condensing coils and other portions of the apparatus-including the evaporator 8 and freezing coils I9 extending into the food compartment are coupled together to form an operative structure, as fully described, in my copending application, Serial No. 183,042, led January 3, 1938, now Patent No. 2,177,796, dated October 3l, 1939.

Attention is directed to Figs. 5 to 8, inclusive,

`which illustrate the generator-absorber, together with its associated air cooled circulatory loop I6 and condensing coils II. In these showings the condensing coils II store the condensed refrigerant in a condenser-receiver I8 during the gen- In Figs. 5 and 6 the condenser-receiver is mounted above the condensing coils I'I, while in Figs. 7 and 8 the condenser-receiver I8 is mounted below the level of the condensing coils. In all three instances the condenser coils and/or condenser-.

receiver are supported below the level of the generator-absorber I I or at least to a level where the coils and/or receiver will not be subjected to reflected heat from the generator-absorber and flue. Thus, in all arrangements the condenser unit it not in the reflected heat zone.

An important feature of this invention is the heat insulating of the generator-absorber and the circulation of hot gases away from the food compartment, together with the utilization of the ascending current of hot gases to draw cool air from adjacent the floor of the refrigerator pass the condenser tubes, condenser-receiver and generator circulatory system. 'I'o this end a transverse substantially horizontal curved hood or bafiie 2l) is placed in spaced relation over the front and top of the generator-absorber Il.

Referring to Fig. 3, it will be seen that this hood or baille 20 extends across the entire length of the generator-absorber and is spaced therefrom by forming an air circulatory passage 2| extending under the bottomof the food compartment 4 and upwardly around the back of the food compartment to adjacent the top thereof. Its outer wall isdeflned by the Vertical partition or flue 22 which is substantially U-shaped and has its free ends attached to the back plate I0. The lower end of the baffle 22 is supported by and overlies an upper edge of a horizontal transverse downwardly curved plate 25, which extends around the top and front of the generator-absorber and terminates near the base of the refrigerator. The downwardly curved baffle plate 25 is covered throughout its top surface 'and downwardly around the front of the generator-absorber with heat insulating material 26.

As will be observed from Fig. 2, a vertical dividing baffle 21 extends across the lower part of the cabinet at the rear of the generator-absorber. Cooling and condensing tubes i6 and l1 are supported in the rear section of the lower cabinet and to arrest any heat from the burner contacting the cooling tubes, the rear section is further separated from the front section by a Vertical baffle 28 spaced from baille 21. To the rear of the baffle plate 21 is an open space continuing to the rear of plate l which is open at the top and joins flue 22. The generator cooling tubes IB, condenser tubes l1 and condenser-receiver I8 are positioned across this bottom and top opened rear chamber.

The hot gases risingV from the burner vI2 are directed upwardly by means of the side angle plates 3i) and upwardly and rearwardly extending offset edge 3l of the baffle plate 21 and horizontal baffle 25. Inasmuch as the cooling tubes I6 and l1 and receiver I8 are below the upper edges of the baffles, no hot gases can strike them. The curved baiiie 25 and insulated space 2| above the generator-absorber permits a constant circulation of cool air to pass between the top of the generator-absorber and the lower part of the food compartment 4.

This arrangement permits a most economical disposition of the refrigeration apparatus, while allowing the parts which need adjustment and attention to be placed in the lower front part of the cabinet to insure easy access thereto and with absolute certainty that no heat will strike the food compartment. Y

What I claim is:

l. In an intermittent absorption refrigeration apparatus, a cabinet, an insulated food compartment secured in the upper front section thereof, a vertical heat flue arranged between the rear of said food compartment and the rear wall of said cabinet absorption refrigeration. mechanism including an intermittently heated generator-absorber, condenser unit and evaporator positioned in said cabinet, the said generator-absorber being positioned directly below and in spaced relation to said food compartment, a balile extending from adjacent the base of said cabinet upwardly and around the portion of the generator-absorber nearest the said food compartment and joining said vertical heat flue, the said condensing unit being also positioned to the rear and adjacent the base of said cabinet directly beneath the lower end of said heat flue whereby heat from the generator-absorber ascending in said flue causes a draft of unheated air to pass over said condenser unit.

2. A refrigeration apparatus as set forth in claim 1, wherein a second baille is positioned parallel to the rst mentioned baffle on the opposite side of said generator-absorber between said generator-absorber and the said condensing unit.

3. In a refrigerating apparatus, the combination of a cabinet, an insulated food compartment in the upper part thereof, refrigerating mechanism including a generator-absorber, evaporator and condenser all connected in operative cycle positioned in said cabinet, a main flue extending throughout the height of the cabinet adjacent the rear wall thereof, the said generator-absorber being located directly below the said food compartment and in spaced relation thereto, a secondary ilue mounted around and conforming to the contour of the top of said generator-absorber said secondary flue having a layer of insulating material thereon adjacent the generator-absorber and extending upwardly to the top of said cabinet parallel to the main flue, with the said condenser positioned in the main flue to the rear of and below the generator-absorber.

4. In a refrigerating apparatus, the combination of a cabinet, an insulated food compartment in the upper part thereof, refrigerating mechanism including a generator-absorber, a heater therefor, evaporator and condenser unit all connected in operative cycle positioned in said cabinet, a flue extending throughout the height of the cabinet adjacent the rear wall thereof, the said generator-absorber being located directly below the said food compartment and in spaced relation thereto, with the said condenser positioned entirely in the main flue to the rear of and outside of the reflected heat zone of said generator-absorber and ilue.

EDMUND E. ALLYNE. 

